MULTI-MODAL TRIANGULATION FOR IN-SITU BORESIGHT CALIBRATION OF FRAME AND LINE CAMERAS ONBOARD GNSS/INS-ASSISTED UAVS

Forests are measured with different laser scanning systems, but comparable data from the same trees are rare. We created a public dataset from nine plots in the Central Hardwood Forest of the eastern United States using aircraft, drones, backpacks, and field surveys. It includes 838 individual-tree point clouds representing 231 trees. The point clouds were spatially aligned, allowing the same trees to be compared across views. The dataset can support forest measurement and ecological research.